Stephen Harper shouted down for saying NDP didn’t support fight against Hitler

God help me, I'm posting a National Post article here of all places, because they seem to be having the same reaction I am:

Prime Minister Stephen Harper was shouted down during a debate in question period Thursday on the Afghanistan mission for suggesting the NDP – not yet in existence – didn’t even support Canada’s military involvement in the Second World War.

NDP Leader Thomas Mulcair was asking Harper if he intended to extend the Afghanistan mission past 2014 after a Postmedia News report Wednesday said U.S officials had asked Canadian special forces to stay past the withdrawal date.

The prime minister responded the NDP has a pacifistic ideology “regardless of circumstances” and his government would make the right decision for Afghanistan’s security.

“In 1939, the NDP leader didn’t even want to support the fight against Hitler,” Harper said, before being drowned out by cat calls.